Ringo Starr to Douglas Trumbull in 8 Steps
- Ringo Starr played drums for Loop de Loop
- Loop de Loop was arranged by Harry Nilsson
- Harry Nilsson sang A Man and His Castle
- A Man and His Castle was written by Scott Turner
- Scott Turner wrote The Ash Grove
- The Ash Grove was written by Diane Lampert
- Diane Lampert wrote the title song for Silent Running
- Silent Running was directed by Douglas Trumbull